Just after the doors of Watches & Wonders have closed, Patek Philippe creates a stir with yet another sophisticated timepiece that offers a multitude of innovative features in the ref. 5470P-001? the brand’s first wrist chronograph which is able to measure and display the tenths-of-a-second. Aptly christened 1/10th Second Monopusher Chronograph, the debutante has its entrance in a 950 platinum case with a diameter of 41mm and boasts a new high-frequency movement that comes with no fewer than 31 patents, of which seven are exclusive to this watch. Furthermore, the manually wound CH 29-535 PS 1/10 features two separate chronograph mechanisms and sweep hands. As the name tells us, this advanced chronograph model has a single pusher at 2 o’clock that successively executes the start, stop, and reset operations. 
Based on caliber CH 29-535 PS, which was launched in 2009, the new movement features a traditional chronograph architecture with a column-wheel control and horizontal wheel clutch. However, in order to measure the tenths of a second, the frequency has been increased to 5Hz respectively 36,000 vph.

In order to display the chronograph functions as clearly as possible, the manufacture’s engineers came up with a rather unusual design comprising of two independent chronograph mechanisms: one for the seconds and the instantaneous 30-minute counter, the other one exclusively for measuring the tenths of a second. For best legibility, th...